The figure shows how to implement an alarm buzzer in an LM3914 to warn about crossing the scale limit. The circuit can use other types of warning.
This circuit was found in an Italian magazine Elettronica Prática of 1977. The transistors can be...
Found in a 1967 American documentation, this circuit produces a pulse with a delay that depends on the...
This fraction watt amplifier uses transistors that are still quite common in our market. The power...